.loader-shade{
    display: none;
    overflow-x: hidden;
    opacity: 0.2;
    background:black;
    filter:alpha(opacity=20);  /*支持 IE 浏览器*/
    -moz-opacity:0.2;
    position: fixed;
    z-index: 99999999;
    outline: 0;
    overflow-y: auto !important;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}
.loader{
    z-index: 999999999;
    display: none;
    height:200px;
    width:200px;
    position: fixed;
    top: 0px;
    left: 0px;
    right: 0px;
    bottom: 0px;
    margin: auto;
    text-align: left;
}
.loader p{
    padding-top: 100px;
    font-size: 18px;
    font-weight: 600;
}
.loader:before{
    content: "";
    width: 50px;
    height: 5px;
    border-radius: 50%;
    background: #000;
    opacity: 0.1;
    position: absolute;
    top: 100px;
    left: 60px;
    animation: shadow .5s linear infinite;
}
.loader:after{
    content: "";
    width: 80px;
    height: 80px;
    border-radius: 3px;
    background: red;
    position: absolute;
    top: 0;
    left: 50px;
    animation: loading .5s linear infinite;
}
@-webkit-keyframes loading{
    17% {
        border-bottom-right-radius: 3px;
    }
    25% {
        transform: translateY(9px) rotate(22.5deg);
    }
    50% {
        transform: translateY(18px) scale(1, 0.9) rotate(45deg);
        border-bottom-right-radius: 40px;
    }
    75% {
        transform: translateY(9px) rotate(67.5deg);
    }
    100% {
        transform: translateY(0) rotate(90deg);
    }
}
@keyframes loading{
    17% {
        border-bottom-right-radius: 3px;
    }
    25% {
        transform: translateY(9px) rotate(22.5deg);
    }
    50% {
        transform: translateY(18px) scale(1, 0.9) rotate(45deg);
        border-bottom-right-radius: 40px;
    }
    75% {
        transform: translateY(9px) rotate(67.5deg);
    }
    100% {
        transform: translateY(0) rotate(90deg);
    }
}
@-webkit-keyframes shadow{
    0%,
    100% {
        transform: scale(1, 1);
    }
    50% {
        transform: scale(1.2, 1);
    }
}
@keyframes shadow{
    0%,
    100% {
        transform: scale(1, 1);
    }
    50% {
        transform: scale(1.2, 1);
    }
}